Machine for making paper-filtering stones



(No Model.)

, 'B'. KLARY. v Machine for Making Paper Filtering Stones, 8w.

Patented July 20,1880.

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NiPEIEiISv PHOTOLITHOGRAPNER. WASHINGTON. D C

UNITED STATES PATENT OFFICE.

BONIFAOIUS KLARY, OF ESSLINGEN, WURTEMBERG, GERMANY, ASSIGNOR T0 JOHNJARISGH, ()F HOLYOKE, MASSACHUSETTS.

MACHINE FOR MAKING'PAPER-FILTERING STONES, 84C.

SPECIFICATION forming part of Letters Patent N0. 230,287, dated July 20,1880,

Application filed June 3, 1880. (No model.)

To all whom it may concern Be it known that I, BONIFAOIUS KLARY, acitizen of the Kingdom of Wiirtemberg, in the Empire of Germany,residing at Esslin gen, in the Kingdom of Wiirtemberg, have invented anew and useful Improvement in Machines for Making Paper-Filtering Stonesand the Product of such Machines, of which the following is aspecification.

This invention relates to the construction and operation of machines formaking stones for use in filtering paper, and also to the constructionof such stones.

This invention is illustrated in the accompanying drawings, in which-Figure 1 represents a side view, partly in section, of the machine. Fig.2 is a plan or top view. Fig. 3 is a cross-section on the line as m,Fig. 1. Fig. 4 shows the stone.

Similar letters indicate corresponding parts.

The letter A designates a table or frame supportinga bed-plate, B, uponwhich rests a mold, O. The bed-plate B is provided with a series ofupwardly-projecting pins or formers, 6, preferably of tapering form, andin the bottom of the mold G are a series of holes, corresponding innumber, size, and location to these pins or formers, so that the lattermay pass through the bottom of the mold.

The sides 0 O of the mold O are both hinged to one of its ends, as atff, while they are provided with latches g, for engaging with stops h,attached to the opposite end thereof, and under normal conditions thesides of the mold are locked in their positions by means of theselatches.

The mold C rests on a lifting-plate, H, in which, like in the bottom ofthe mold, are holes for the passage of the pins or formers c. and towhich are attached the upper ends of slide-rods I. The slide-rods I- areguided .in the top of the table or frameA, and are connected at theirlower ends by a cross-head, J, which is subjected to the action of alifting-screw, K. This screw K works in a traverse, A, on the lower partof the table A, and it acts on a central part of the cross-head J bothto raise and lower the same.

In applying the machine to use the mold O Patented in Germany February13, 1872.

is moved to a lower position, and is filled with a plastic. composition,while, when the latter has set or hardened, the mold is lifted to such aheight as to clear the pins or formers e. The sides 0 O of the mold arethen set free, and are swung outward on their hingejoints f f, when thestone or block cast in the mold may be readily removed. By the action ofthe pins or formers c the stone, cast as stated, is provided withvertical holes or passages I, Fig. 4, and when a layer of paper orpaper-pulp is placed on the stone to be filtered or strained, as inbleaching, the water escapes through these holes.

The bottom ofthe mold O is curved or arched in such a manner that thestone cast therein obtains a concave under surface, as at N, the

upper surface thereof being substantially flat or horizontal; and thisfeature of the stone forms an important part of my invention, theadvantage thereby gained being that the water is permitted to escapefrom the holes Z without difficulty when the stone is placed on a plainor solid surface.

It should be remarked that another form of locking devices may besubstituted for the latches g, or the sides of the mold C may be fixed,inasmuch as the mold can be taken from the lifting-plate H and reversedfor the removal of the stone. Also, that another form of liftingmechanism may be used in lieu of that shown and described.

What I claim as new, and desire to secure by Letters Patent, is-

l. The combination of a bed-plate having a series of upwardly-projectingpins or formers, a mold having holes in the bottom thereof for thepassage of the pins or formers, and a lifting mechanism, the wholeconstructed and adapted to operate substantially as described.

2. The combination of a bed-plate having a series of uciwardly-projecting pins or formers, a mold having holes in the bottomthereof for the passage of the pins or formers, and having hinged sides,devices for locking the sides of the mold, and a lifting mechanism, thewhole constructed and adapted to operate substantially as described.

3. The combination, with the moldO, the

bed-plate B, and its pins or formers, of the face, substantially as andfor the purpose de- 10 lifting-plate H, the sliderods I, attached toscribed. the lifting-plate at their upper ends, the cross- In testimonythat I claim the foregoing I head connecting the slide-rods at theirlower have hereunto set my hand and seal this 10th 5 ends, and thelifting-screw K, the whole adaptday of April, 1880.

ed to operate substantially as described. BONIFAOIUS KLARY. [L. s.]

4. As a new article of manufacture, a filter- Witnesses: ing-stonehaving a series of vertical holes or R. M. J ACKSON, passages combinedwith a concave under sur- S. E. POTTER.

